package com.heima.wemedia.service.impl;

import com.baomidou.mybatisplus.core.toolkit.Wrappers;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.common.enums.AppHttpCodeEnum;
import com.heima.model.wemedia.dtos.WmLoginDto;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.utils.common.AppJwtUtil;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmUserService;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.util.HashMap;
import java.util.Map;

@Service
public class WmUserServiceImpl extends ServiceImpl<WmUserMapper, WmUser> implements WmUserService {

  @Override
  public ResponseResult login(WmLoginDto dto) {
    // 1.检查参数
    if (StringUtils.isBlank(dto.getName()) || StringUtils.isBlank(dto.getPassword())) {
      return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID, "用户名或密码为空");
    }

    // 2.查询用户
    WmUser wmUser = getOne(Wrappers.<WmUser>lambdaQuery().eq(WmUser::getName, dto.getName()));
    if (wmUser == null) {
      return ResponseResult.errorResult(AppHttpCodeEnum.DATA_NOT_EXIST);
    }

    // 3.比对密码
    String salt = wmUser.getSalt();
    String pswd = dto.getPassword();
    pswd = DigestUtils.md5DigestAsHex((pswd + salt).getBytes());
    if (pswd.equals(wmUser.getPassword())) {
      // 4.返回数据  jwt
      Map<String, Object> map = new HashMap<>();
      map.put("token", AppJwtUtil.getToken(wmUser.getId().longValue()));
      wmUser.setSalt("");
      wmUser.setPassword("");
      map.put("user", wmUser);
      return ResponseResult.okResult(map);

    } else {
      return ResponseResult.errorResult(AppHttpCodeEnum.LOGIN_PASSWORD_ERROR);
    }
  }
}
